Revision 3

#90205Store at -20C

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IF-F, IF-IC, FC-FP

REACTIVITY:

M

SENSITIVITY:

Endogenous

MW (kDa):

90, 100

Source/Isotype:

Rabbit IgG

UniProt ID:

#Q99P91

Entrez-Gene Id:

93695

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunofluorescence (Frozen) 1:400
Immunofluorescence (Immunocytochemistry) 1:50 - 1:200
Flow Cytometry (Fixed/Permeabilized) 1:50 - 1:200

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

GPNMB (E7U1Z) Rabbit mAb recognizes endogenous levels of total mouse GPNMB protein. This antibody does not cross-react with human GPNMB protein.

Species Reactivity:

Mouse

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the amino terminus of mouse GPNMB protein.

Background

Glycoprotein non-metastatic gene B (GPNMB) is a type I transmembrane glycoprotein overexpressed in many types of cancer. The GPNMB glycoprotein is involved in many physiological processes, including mediating transport of late melanosomes to keratinocytes (1), regulating osteoblast and osteoclast differentiation and function (2), stimulating dendritic cell maturation, promoting adhesion of dendritic cells to endothelial cells (3), enhancing autophagosome fusion to lysosomes in tissue repair, and regulating degradation of cellular debris (4,5).

While typical GPNMB expression is seen in tissues including skin, heart, kidney, lung, liver, and skeletal muscle (3,6), research studies show elevated GPNMB expression often contributes to the metastatic phenotype in numerous cancers (reviewed in 7). GPNMB is typically localized to intracellular compartments in normal cells (1,8), but investigators found it primarily on the cell surface of tumor cells (9,10). Differential localization and expression, and the role of GPNMB as a tumor promoter in many cancer types make this protein a viable therapeutic target (11).

The GPNMB ectodomain can be cleaved by matrix metalloproteinases and shed from the cell surface (12). Research studies identify the sheddase ADAM10 as one peptidase responsible for cleavage of the GPNMB ectodomain at the surface of breast cancer cells. Shedded GPNMB ectodomains may promote angiogenesis by inducing endothelial cell migration (13).

  1. Tomihari, M. et al. (2009) Exp Dermatol 18, 586-95.
  2. Sheng, M.H. et al. (2012) PLoS One 7, e35280.
  3. Shikano, S. et al. (2001) J Biol Chem 276, 8125-34.
  4. Li, B. et al. (2010) FASEB J 24, 4767-81.
  5. Patel-Chamberlin, M. et al. (2011) Kidney Int 79, 1138-48.
  6. Bandari, P.S. et al. (2003) Regul Pept 111, 169-78.
  7. Maric, G. et al. (2013) Onco Targets Ther 6, 839-52.
  8. Ripoll, V.M. et al. (2007) J Immunol 178, 6557-66.
  9. Tse, K.F. et al. (2006) Clin Cancer Res 12, 1373-82.
  10. Rose, A.A. et al. (2010) Clin Cancer Res 16, 2147-56.
  11. Keir, C.H. and Vahdat, L.T. (2012) Expert Opin Biol Ther 12, 259-63.
  12. Furochi, H. et al. (2007) FEBS Lett 581, 5743-50.
  13. Rose, A.A. et al. (2010) PLoS One 5, e12093.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IF-F: Immunofluorescence (Frozen) IF-IC: Immunofluorescence (Immunocytochemistry) FC-FP: Flow Cytometry (Fixed/Permeabilized)

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
Alexa Fluor is a registered trademark of Life Technologies Corporation.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

使用に関する制限

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Revision 3
#90205

GPNMB (E7U1Z) Rabbit mAb

Western Blotting Image 1: GPNMB (E7U1Z) Rabbit mAb Expand Image
Western blot analysis of extracts from SIM-A9, 4T1, and EL4 cells using GPNMB (E7U1Z) Rabbit mAb (upper) and β-Actin (D6A8) Rabbit mAb #8457 (lower). As expected, GPNMB protein is not expressed in either 4T1 or EL4 cells.
Western Blotting Image 2: GPNMB (E7U1Z) Rabbit mAb Expand Image
Western blot analysis of extracts from B16-F10 cells, mock transfected (-) or transfected with siRNA targeting mouse GPNMB (+), using GPNMB (E7U1Z) Rabbit mAb (upper) and GAPDH (D16H11) XP® Rabbit mAb #5174 (lower).
Western Blotting Image 3: GPNMB (E7U1Z) Rabbit mAb Expand Image
Western blot analysis of extracts from B16-F10 cells, untreated (-) or treated with PNGase F (+), using GPNMB (E7U1Z) Rabbit mAb (upper) and β-Actin (D6A8) Rabbit mAb #8457 (lower).
Western Blotting Image 4: GPNMB (E7U1Z) Rabbit mAb Expand Image
Western blot analysis of extracts from 293T cells, mock transfected (-) or transfected (+) with constructs expressing Myc/DDK-tagged full-length mouse GPNMB protein (mGPNMB-Myc/DDK) and Myc/DDK-tagged full-length human GPNMB protein (hGPNMB-Myc/DDK), using GPNMB (E7U1Z) Rabbit mAb (upper), DYKDDDDK Tag Antibody #2368 (middle), and β-Actin (D6A8) Rabbit mAb #8457 (lower).
Immunofluorescence Image 1: GPNMB (E7U1Z) Rabbit mAb Expand Image
Confocal immunofluorescent analysis of brain from an amyloid mouse model of Alzheimer’s disease using GPNMB (E7U1Z) Rabbit mAb (green). After blocking free secondary antibody binding sites with Rabbit (DA1E) mAb IgG XP® Isotype Control #3900, the tissue was then labeled using HS1 (D5A9) XP® Rabbit mAb (Rodent Specific) (Alexa Fluor® 488 Conjugate) #68206 (red pseudocolor) and β-Amyloid (D54D2) XP® Rabbit mAb (Alexa Fluor® 647 Conjugate) #42284 (cyan pseudocolor). Sections were mounted in ProLong® Gold Antifade Reagent with DAPI #8961 (blue).
Immunofluorescence Image 1: GPNMB (E7U1Z) Rabbit mAb Expand Image
Confocal immunofluorescent analysis of B16-F10 cells (left, positive) or 4T1 cells (right, negative) using GPNMB (E7U1Z) Rabbit mAb (green). Actin filaments were labeled with DyLight 554 Phalloidin #13054 (red). Samples were mounted in ProLong® Gold Antifade Reagent with DAPI #8961 (blue).
Flow Cytometry Image 1: GPNMB (E7U1Z) Rabbit mAb Expand Image
Flow cytometric analysis of 4T1 cells (blue, negative) and B16-F10 cells (green, positive) using GPNMB (E7U1Z) Rabbit mAb (solid lines) or a concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed lines). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.